If you're feeling handy, you could build a physical or digital "Bubblestand."
A simple wooden sign that reads "Bubbles - 25¢" and "Lessons - 25¢." [S1E4] Bubblestand
In the classic Season 1 episode (often listed as S1E2a or S1E4 depending on the platform), SpongeBob demonstrates that blowing bubbles is an art form requiring precision and his signature "technique." If you're feeling handy, you could build a